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EngineerUS

Mitchell Hashimoto

Founder, Ghostty; co-founder of HashiCorp

Harness engineering

Co-founded HashiCorp and now builds the Ghostty terminal. His Feb 2026 post "My AI Adoption Journey" named "Engineer the Harness" as a personal practice, one of the earliest uses of the term.

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Sources

  1. mitchellh.com/writing/my-ai-adoption-journey
  2. mitchellh.com

Verified Oct 29, 2026